Drawing and spinning machine



www5 Jan- 38 1192K L, P. FRIEDER ET AL DRAWING AND SPINNING MACHINE Filed NOV. 28, 1925 3 Sheets-S1166@ l ATroRNEY Jam H8, i927@ y @1,614,465 L. P. FRIEDER ET AL DRAWING AND SPINNING MACHINE Filed NOV. 28, 1925 3 Sheets-Sheet 2 INVENTOR IM/Vlym im 318 R92 j@ 7 L, P. FREDER ETAL DRAWING AND SPINNING MACHINE 3 Sheets-Shea?I 5 u. ww @y F'led Nov. 28, 1925 Patented Jan. 18, 1927.

f UNT-TED STATES PATENT OFFICE.

LEONARD I. FRIEDER, OF NEW YORK, N, Y., AND PHILIP S. HUNTLEY ANDl JOHN W. HOLLAS, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNORSTO NATIONAL SPUN SILK CO., INC., OF NEW BEDFORD, MASSACHUSETTS, A CORPORATION OF MASSA- CEUSETTS.

DRAWING AND rSPINN ING MACHINE.

Application filed November 28, 1925. Serial No. 71,886.

A broad object of this invention is to p rovide .an improved apparatus for drawlng and spinning textile fibers, which fibers may be either long or short or both long and short, so as to produce a satisfactorily finished yarn.

Another object is to provide an apparatus of the kind mentioned which is peculiarly adapted to the spinning of yarns of all kinds. including silk yarns.

Another object is to produce an apparatus for the purpose specified which is .capable of producing a greater output of finished yarn than any prior machines with which the applicants are familiar.

Still another object is to produce a drawing and spinning apparatus in which certain of the parts may be readily removed, adjusted and cleaned. i

.iVith the foregoing and incidental obiects in view, the invention consists in a novel combination and arrangement of parts, the novel features of which are pointed out in appended claims and a preferred` embodiment of which is hereinafter described with reference to the drawings accompanying and forming a partof this specification.

In said drawings,

Figs. 1 and 2 are respectively the upper and lower parts of an apparatus containing the improvements with some of the parts omitted and others cut or broken away to disclose details of the construction.

Fig. 3 is a detail in right elevation of the improved draft mechanism, the means whereby one of the pressure rolls may be detached from the mechanism, and the improved mechanism for cleaning some of the fiber handling rolls.

Fig. 4 is a front view ot the mechanism whereby the cleaning devices are detachably supported in the machine and shows particularly the details of the mechanism whereby the devices may be treed and adjusted to different positions.

Fig. 5 is a front view, partly in section, of some of the mechanism shown in Figs. 3 and a.

The apparatus shown in the drawings is designed particularly for eiiecting the desired drafts and twists in a silk yarn or other yarn made up of fine fibers and is especially adapted to the production of yarns from rovings composed of both long and short fibers. The part of the machine shown in Fig. 2 is substantially the same in structure and general design as machines now on the market but the rest of the mechanism, that is, the part of it shown in Fig. 1, is materially different in many respects from the prior devices.

The material, rovings 0r the like, to be worked upon is supplied `from. spools 10 (Fig. 1) and passes through the guides 11 underneath rolls 12, connected together in pairs by shafts 13, the shaft between the rolls of each pair resting in open slots formed in arms 14 extending from the framework of the machine. The rolls 12 rest upon the usual fluted rolls 15, the two rolls cooperating to control and retard the movements of the material passing between them.

At some distance below the pair of rolls 12 and 15 is another pair of rolls 16 and 17. The rolls 16 are of the usual fluted construction and the rolls 17 are, as is the case with the rolls 12, preferably made of rubber or with rubber covered peripheries, although metal or compositions other thanr rubber may be employed. The material passes between the rolls 16 and 17 and the rolls 16 are driven by gearing (not shown) at whatever rate is required for the particular yarn to be produced. A change of speed may of course be effected by having the gearing of the usual change-speed type.

The rolls 12 and 15 are also driven by mechanism not shown) which may also be of the change-speed gear type but at a rate which gives a much lower peripheral speed for the rolls 15 and 12 than for the rolls 16 and 17 This causes a drawing of the fibers between the two rolls and the degree of the drawing may be controlled by varying the relative speeds of the pairs of rolls. l

Between each of the two pairs of rolls so ar described, i. e. rolls 15 and 12 and rolls 16 and 17, is mounted a plate 21 having a curved surface over which the material is drawn by the rolls 16 and 17. This plate may be adjusted to different positions by the double lock nut arrangement illustrated in Fig. l. The plate 21 takes the place of the plurality 'of carrier rolls employed by machines in the prior art; but the plate has marked advantages over the rolls including greater simplicity of construction and easier assembling.

An important feature of the improved mechanism is `the pair of "break draft rolls 23 and 24 preferably located between the lower draft rolls and thc lower edge of the curved plate 21. The rolls 23 may be fluted and the rolls 24 arc ot' wood or other suitable material and preferably rest on a support 25 so constructed as to permit the rolls 24 to hold the material against the periphery of the rolls 23. The rolls 23 and 24 cooperate to maintain control over all of the fibers passing through the mechanism regardless of the varying lengths of the fibers and contribute very materially to the production of a uniform and otherwise satisfactory yarn. The rolls 23 may be driven through any suitable connections to the driving mechanism at a speed slightly in excess of the speed of the rolls 15, but at a much lower speed than the peripheral speed of the rolls 16.

After passing through the devices which have been described in detail, the material is led through the usual guides 27 (Fig. 2) extending from the thread board to the spinning mechanism designated generally by the numeral 28. This mechanism comprises the usual spinning rings, bobbins, spindle and the like, and is driven by the cylinder 31 in connection with tensioned tapes (desi gnated generally by the numeral 32) ot' the usual type.

The rolls 17 are connected together in pairs corresponding to the pairs of rolls 12 and are made detachable so as to permit clearing them from lint or fibers which may have become Wound around them. The devices for detachably holding each pair of rolls in position comprise a hook 38 (Figs. 1 and 3) engaging above the shaft 39 supporting the rolls on its ends. At its rear end the hook 38 is pivoted at 40 to a bell crank 41 pivoted at 42 to an extension on the machine framework. The inwardly extending arm of the bell crank 41 has a plurality of notches 43 to receive a weight 44. By adjusting the weight to different positions on the arm l idiii'erent degrees of tension on the rolls 17 vmay be obtained. The hook 38 rests upon a guide 45 on-,the machine frame.

The-.hook 38-may be disengaged from the shaft 39 to free the rolls 17 whenever it is desired to remove the rolls for cleaning or any other purpose. The mechanism for disengaging the hook comprises a bell crank 47 pivoted to the machine framing at 48 and normally held 'by a torsion spring 49 in the position shown in the drawings. By applying hand pressure at 50 to the bell crank 47 the .bell crank may be swung against the tension of its vspring 49 to engage a suitably formed portion 51, with the lower arm of the weighted bell crank 41. thereby rocking the latter hell crank and thrusting the hook 38 forward to release the roll 17. After the hook 38 has moved forward far enough for the hook 38 to be disengaged the portion 51 will engage the notch 52 in the bell crank 41 and hold the hook 38 forward until the rolls 17 are restored to position, whereupon reversal of movement of the bell crank 47 will latch the rolls in position. Some of the necessity for removing the rolls 17 is presented by supplying cleaningY devices which may be supported in such a manner as to rest in contact with the rolls and pick up any lint which may have adhered. In the form shown, these cleaning devices are cast metal bars 53 having their interiors shaped to conform generally to the peripheries of the rolls 17 and covered with plush or other material suitable for the purpose. The cleaning devices are slotted at intermediate points to engage extensions 54 on the hooks 38 which, as before'cxplained, retain the rolls 17 in position.

The improved machine also comprises a mechanism for keeping the rolls 16 and 23 clear of lint and the like. This mechanism comprises a bell crank 60, pivoted at 61 between lugs on the rear of plates 21, and having one of its arms weighted as at 62. The other arm of the bell crank is provided with a square. notch 63 to engage a square rod 64 carrying a pair of rolls 65 (Fig. 4) to cooperate with the pairs of rolls 16 and 23.

' Each roll 65 is covered with plush or any other suitable material. When a fresh surface on the roll 65 is needed` the bell crank is rocked manually in a clockwise direction (Fig. 3) to disengage the rolls 65 from the rolls 16 and 23 and the rolls 65 given a partial turn, for example a fourth of a turn and the squared rod 64 re-engaged with the notch 63, thereby bringing a fresh surface on the rolls in position to act on the rolls 16 and 23. A linger piece 68 provides a ready means for manipulating the bell crank 60.

"While the description has been limited to a single section of the mechanism, it is to he understood that the complete machine consists of duplications of the mechanism described and that there may be any desired number `of such duplications. As shown in Fig. 1, cross rods 470 may be used to assist in giving rigidity to the auxiliary frames 71 in or upon which much of the novel. mechanism is supported. The frames 71 .are secured by any suitable-means such as bolts 72 to the main frame of the machine.

The mechanism described has a capacity approximately fifty per cent greater than any prior machine known to the applicants and produces a better and more uniform yarn. While these advantages are due to llll - struction is due to the controlling effect of the break draft rolls 23 and 24 upon the fibers. lVhile in the foregoing and in some Vof the claims these pairs of rolls 23 and 24 are referred to as break draft rolls, this is merely because of the lack of a better term to define` or describe them, and the use of that term isnot intended to be a limit-ation. Vhilc the details of construction of one lembodiment of the invention have been described in the foregoing, it is not desired that the invention be limited to such details except in so far as they are included in the claims which follow.

lVhat is claimed is- 1. In a machine of the class described, the combination of a plurality of pairs of rolls, one pair rotating at a higher peripheral vspeed than the other to effect drawing of the fibers between the pairs of rolls, a curved plate adjustable to different positions between the pairs of rolls and over which the material is drawn by the pair of rolls having the higher peripheral speed, and a pair of break draft rolls between said plate and the rolls having a higher speed.

2. In a machine of the class described, the combination of a plurality of pairs of rolls,

one pair rotating at a higher peripheral,

speed than the other to effect drawing of the fibers between the pairs of rolls, a curved plate between lthe pairs of rolls and over which the material is drawn by the pair of rolls having the higher peripheral speed, and

break draft devices operating between theV pairs of rolls and adjacent to the plate.

3. In a machine of the class described, the combination of a plurality of pairs of rolls, one pair of whichl rotates at a higher peripheral speed than the other pair, an element supported between the pairs of rolls and having a curved surface over which the material passing from one pair of rolls to the other is drawn, and break draft devices engaging the material adjacent one edge of said surface.

4. In a machine of the class described, thev combination of a plurality of pairs of rolls, one pair of which rotates at a higher peripheral speed than those of another pair, an element supported between the pairs of rolls and having a curved surface over which the material passing from one pair of rolls. to the other is drawn, and break draft devices `comprising a gravity roll engaging the material adjacent one edge of said surface.

5. In a machine of the class described, the

ycombination of a plurality of pairs of rolls,

one pair of cach plurality rotating at a higher peripheral speed than an associated pair, an element supported between associated pairs of the rolls of each set and having a curved surface over which the material passing from one pair of rolls to the other is drawn, break draft devices comprising a gravitj7 roll engaging the material near one edge of said surface, and a support for said gravity roll constructed to permit boltlh rotative and bodily movement of the ro 6. In a machine of the class described the combination of a plurality of pairs of rolls comprising a pair of weight rolls and shaft supporting same, a hook engaging the roll shaft between the rolls, a weight connected to said hook and normally acting through the hook to hold the roll in position and apply tension to the weight roll, and means comprising a finger piece for disengaging the hook from the shaft to permit removal of the weight rolls and latching the hook in disengaged position.

7. In a mechanism of the classl described, the combination with a plurality of drawing rolls, a cleaning roll contacting With the drawing rolls, a non-circular rod supporting the cleaning roll, a bell crank one of the arms of which is provided with a non-circular recess to receive said rod, a weight on the other arm of the bell crank effective to hold the cleaning roll in contact with the drawing rolls, and means whereby the bell crank may be rocked against the influence of said weight.

8. In a machine of the class described, the combination with a set of rolls arranged in pairs running at different peripheral speeds to effect drawing of the roving between the rolls, of a curved plate between the pairs of rolls and over the crown of which the roving is drawn by the rolls of one pair, a driven roll between the end of the curved late and the pair of drawing rolls, and a lig t weight gravity roll resting against the roving and holding said roving in contact with said driven roll.

In testimony whereof we hereto affix our signatures. ,j

LEONARD I. FRIEDER. PHILIP S. HUNTLEY. JOHN W. HOLLAS. 

